Calculate A+B-C+D
[6410] Calculate A+B-C+D - Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D! - #brainteasers #math - Correct Answers: 19 - The first user who solved this task is Nasrin 24 T
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Calculate A+B-C+D

Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D!
Correct answers: 19
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Lady trying to catch a ride

A woman comes home early, and finds her husband in bed with a girl.

She is furious, threatens to kill them both... the husband says:

- Believe me, darling, this is just a misunderstanding. I was driving home, and saw this young lady trying to catch a ride. So I decided to give her a lift. I ask her where she needs to go, and she tells me she wants to visit some relatives, but isn't sure about their address. So, I took her home so she could check our phonebook.

- Once there, I saw her dress is pretty ragged, so I decided to give her your old dress. Nearly two years that it's been hanging in the closet, and you never wore it.

- Then, I saw her shoes are also about to fall apart, so I gave her your old shoes, which have been doing nothing but collecting dust for three years. Of course, she said thanks, and then asked:

"Excuse me sir, but is there anything else in this house your wife never uses?"

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Carl Koller

Born 3 Dec 1857; died 21 Mar 1944 at age 86.Czech-born American ophthalmic surgeon whose introduction of cocaine as a surface anesthetic in eye surgery on 16 Sep 1884 inaugurated the modern era of local anesthesia. He was a colleague of Sigmund Freud, who in 1884 was interested in the use of cocaine to cure morphine addiction. Koller noticed cocaine had a numbing effect on the tongue and, after experimenting with animals, introduced it as a local anaesthetic in ophthalmology. It was also quickly adopted for nose and throat surgery and for dentistry. Cocaine was isolated in 1859 and was synthesized in 1885. It became evident that this agent produced erosion of the corneal epithelium in high doses or with repeated use. Later, less toxic, synthetic local anesthetics such as tetracaine and proparacaine were developed.
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